Limited compatibility SL400/SL400A with SL55/SL56/E36/E300H

From the product date July 2013 (CT/D7) the SL400/SL400A unfortunately has only a limited compatibility (GAP+) with the handsets SL55/SL56/E36 and E300H.

The configuration of the base, as well as listening to the answering machine (SL400A only) are no longer supported with the mentioned handsets.